From the experimental results, 4 ponds, we found that the pond is very effective in the treatment, there is a pond filter layers (clay gravel stone) with 6-day water catchment scale.
From the experimental results, we found that the 4 ponds pond treatment is most effective in a pond with a filter layer (soil, gravel, stone), the rate of water storage for 6 days.
From the experimental results of both 4 pond. We found that the pond with efficiency of most is a pond with filter layer (soil, gravel, rock), apparently to retain water 6 days.